RU2099035C1 - Apparatus for intraocular operations - Google Patents

Abstract

FIELD: ophthalmology; equipment for gripping dislocated or incompletely dislocated eye's lens during its extraction. SUBSTANCE: proposed apparatus comprises handle 1, external pipe 2 having oval cross-section, rod 4 made in form of spring-urged piston, internal pipe 6 having oval cross-section and telescopically retracted into external pipe 2, and working 7 consisting of two resilient sharp whiskers attached to lower and of pipe 6. In their free state, resilient whiskers have form of hooked curve, while when apparatus is in idle state whiskers are drawn into external pipe 2. As spring 8 is released, rod 4, internal pipe 6 and, together with it, working portion 7 brusquely (like gun shot) advance inside external pipe 2, thereby releasing resilient whiskers. Latter are projected beyond pipe 2, assume their initial hook-like shape and fix in place eye's lens. EFFECT: reduced time of operation. 2 cl, 5 dwg

Description

 The invention relates to medicine, namely to ophthalmic surgery and can be used to capture the lens during its extraction.

 Known ophthalmic retainer containing a handle and a working body, which is made in the form of two curved ends, forming arcs of a circle of one radius and located in a plane perpendicular to the axis of the handle.

 The known device is unsuitable for capturing a dislocated and subluxated lens, because when the working organ is pressed in, the lens capsule will shift.

 The problem arising from the disadvantage of the known eye fixator, is solved by the design of the proposed device containing the handle, the working body, made in the form of two antennae, in the free state taking the form of an arc, and the handle of the device is equipped with two telescopic tubes: the outer and the inner, to the lower end of which is attached the working body held in its original position and made with the possibility of a sharp movement relative to the outer tube, and the antennae are made of elastic material. In addition, the outer and inner tubes are oval, and in the inner cavity of the handle there is a rod in the form of a spring-loaded piston, held in its original position by a latch.

 In the initial position of the device, the working body is (retracted) inside the outer tube of oval cross section. When the spring-loaded rod is released, the inner tube and with it the elastic antennae move sharply inside the outer tube and the elastic antennae go beyond the latter, take the previously given shape in the form of hooks (arcs). A sharp exit of the antennae provides piercing of the lens capsule without displacement and reliable fixation of the latter. Eliminates the possibility of displacement of the lens in the cavity of the eye, reducing the time of surgery. The oval cross-section of the outer and inner tubes ensures stable movement of the antennae and the minimum size of the surgical incision, facilitates the orientation of the working body relative to the equator of the lens.

 In FIG. 1 shows a General view of the device in its original position; in FIG. 2, section A-A in FIG. one; in FIG. 3 node I in the initial position of the device; in FIG. 4 the same, the working body after the "shot"; in FIG. 5 is a section B-B in FIG. 3.

 The proposed device comprises a handle 1 with an outer tube 2 of an oval section, a cover 3; the rod 4, made in the form of a piston, and located in the inner cylindrical cavity of the handle 1. The rod 4 in the middle part has an annular groove 5 for fixing the rod 4 in the initial position of the device, and in the upper part of the thread; a tube 6 of oval cross section, telescopically accommodated in the outer tube 2; the working body 7, consisting of two elastic pointed antennae attached to the lower end of the tube 6. In the free state, the elastic antennae have the shape of a hook-shaped curve (arc), and in the initial position of the device are pulled into the outer tube 2; a spring 8 located in the inner cavity of the handle 1, which in its initial position (in a compressed state) with its lower end presses on the shoulder 9 of the rod 4, the upper on the cover 3; the latch 10, made in the form of an elastic lever attached at one end to the cover 3. In the initial position of the device, the latch 10 holds the rod 4 by the annular groove 5; regulatory gull 11, with the possibility of axial movement along the thread of the rod 4.

 The device is used as follows.

 The device in its initial position is inserted into the cavity of the eye using one of the known methods. The outer tube 2 is brought close to the lens capsule. The latch 10 is removed from the annular groove 5, the rod 4 is released. The latter, under the action of the spring 8, sharply moves along the device axis by a predetermined amount, the working body (elastic antennae) 7 puncture the lens capsule with a sharp movement, take the previously specified hook-like shape, and securely fix the lens.

Claims (2)

 1. Device for intraocular operations, containing a handle and a working body made in the form of two antennae, in the free state, taking the form of an arc, characterized in that the handle is equipped with two telescopic tubes, the outer and the inner, to the lower end of which is attached a working element held in the initial position and made with the possibility of a sharp movement relative to the outer tube, and the antennae are made of elastic material.  2. The device according to claim 1, characterized in that the outer and inner tubes are made of oval cross-section, and in the inner cavity of the handle is a rod made in the form of a spring-loaded piston held in its original position by a latch.

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